DETROIT – The autopsy report links Detroit pharmacies to the center of the Whitney Houston death investigation.
Some prescription pills and bottles discovered at Houston's Beverly Hills, Calif., hotel room were picked up in Detroit.
The Local 4 Defenders have learned those investigating Houston's death are conducting interviews about her reputed prescription drug use while in Detroit.
Behind-the-scenes footage shows Houston on the Detroit set of "Sparkle" this past year. She spent nearly two months in the city in a swanky suite at the Westin Book Cadillac. While she was in Detroit, Houston also was having doctors call in prescriptions for Xanax and antibiotics.

According to a recently revealed autopsy report, 90 generic Xanax pills were ordered for Houston at a Walgreens at Mt. Elliot Street and Jefferson Avenue. A week before that, another prescription was written by a different doctor at the CVS Pharmacy on Woodward avenue, two blocks from her hotel suite.

All together, four different doctors called in prescriptions for Xanax and antibiotics to pharmacies in Detroit, Los Angeles and Atlanta.
Investigators recently contacted the Detroit pharmacies and interviewed medical staff who worked on the set with Houston.
Retired medical examiner Werner Spitz said he is not surprised investigators focused on Houston's time in Detroit.
"The coroner's office in Los Angeles simply has the ability to instruct, or request I should say, to have the Sheriff's office in Detroit o conduct this investigation," Spitz said.
The official cause of death is listed as drowning, but Local 4 medical expert Dr. Frank McGeorge said the pills Houston popped, along with her drug use, tell the real story.
"The fact that she had to get some while she was here suggest that either she wasn't planning ahead or she was using more than she should have," Dr. McGeorge said.
"Sparkle" will be released this summer.
